A
A good thing that seemed bad at first
A blessing in disguise
Start over
Go back to the drawing board
Better to arrive late than not to come at all
Better late than never
Good luck
Break a leg
Something common
A dime a dozen
Don't give up
Hang in there
Go to sleep
Hit the sack
You have to work for what you want
No pain, no gain
It's not complicated
It's not rocket science
It's too late
Miss the boat
To joke with someone
Pull someone's leg
Avoid saying what you mean, usually because it is uncomfortable
Beat around the bush
Doing a good job
On the ball
Work better or leave
Get your act together
An ideal situation
The best of both worlds
The person we were just talking about showed up!
Speak of the devil
Sick
Under the weather
Very expensive
Costs an arm and a leg
It's raining hard
It's raining cats and dogs
Don't count on something good happening until it's happened.
Don't count your chickens before they hatch
Good things come after bad things
Every cloud has a silver lining
The son is like the father
He's a chip off the old block
It's easy
It's a piece of cake
Get two things done with a single action
Kill two birds with one stone
I made a mistake
Live and learn